Twin-body tire valve



May 27, 1930.

H. HAsTlNG 1,760,551

TWIN BODY TIRE VALVE Filed Jan `25, 1929 ATTORNEYS t `'5 structions.

"30jthe inner surface of an inner tube 3.

washer 4 1s placed over the stem and a nut 5 Patented May 27, 1930PATENT oFFicgE HOMER HAsTING, F DETROILMIQHIGAN TWIN-BODY TIRE VALVEApplication filed January 25, 1929. Serial No. 334,918.

The present `invention pertains to a novel pneumatic tire valve and hasas a primary object to attain the highest possible degree of efficiencyand simplicity in tire valve conuse ofthe present valve, made simple.,easy and requiring a minimum amount oi energy and the pressure iseffectively sealed in the tire when the required pressure is onceattained.

A secondary object of the present invenj tion is to construct a twinbody tire valve requiring a reduced number of operations neci essary inconstruction over the conventional devices on the market at present. Thedevice is constructed with a dual valve arrangement,

` separately seating and'thereby doubly in` eures against any leakage ofpressure.

i With these obj ects in view and others which i are resultant therefromor subsidiarythereto my invention is fully disclosed by way oi eXampleinthe following description, reference beingmade to the accompanyingdrawing, in which the valve is illustrated in cross section, by use oflike characters which `are employed to designate the corresponding partsthroughout.

The stem of the valve is a hollow tube 1 having at its lower end a iange2 engaging is screwed towards the tube whereby the inner tube is clampedbetween the washer 4 and the flange 2, the edge of the inner tube projecting into a recess 6 formed on the valve stem. The upper end of thevalve stem is provided with an extending neck portion 7 which is smallerin diameter than the threadj ed portion of the stem, the neck portionbeing adapted to project above the rim or i'elloe Into the upper end ofthe bore 8, which is The inliation of the tirei`s,by`

tapped as at 11, is screwed a sleeve 12 having a screwtlireaded portionadapted to project above the top ofthe neck 7. The lower end of the'sleeve 12 is formed with a valve seat 13 adapted to be engaged by avalve 50 head 14 carried on a pin 15. The pin has a portion'l extendingupwardly beyond the sleeve 1,2, serving as a` finger piece, and aportion extending downwardly, the lowermost extremity being providedwith a valve head 16. .The valve head 14 is Jforced into` engagementwith the seat 13 by pressure of the spring 10 while at the same time thevalve 16 slides llongitudinally into the lower end of asmaller bore 17.

A cap 18 is screwed upon the upper projecting end of the sleeve 12 andadapted to be screwed tightly against the upper end of the neck 8 andthereby provide an airtight joint as at 19 and positively seal the airin 55 the tire.

In operation the upwardly projecting pin is forced downwardly which`unseats the valve 14 from the seat 13 and causes the valve head 16 tomove longitudinally and to eX 7o tend beyond the flange 2 to permit theair to flow freely through the valve stem. The

moment downward pressure is relieved the spring 10 will seat the valve14 against the seat 13 and cause the valve head 16 to slide 75 into thebore 17 to prevent passing of airV through the valve stem. The valves 14and 16 may both be unseated by air pressure from an air line connectedto the upper end of the sleeve 12 when the cap 18 is removed to ad- 80mit air to the tire but pressure from the in-` side tends to assistthespring 10 in more securely lseating the valve 14. The valve head 16is such that it blocks passage of air through the bore 17 at any timewhen the 85 former is in the bore. j

Although a specific embodiment of my invention has been illustrated anddescribed it is to be understood that various alterations may be made inthe details of construction without departing from the spirit of theinvention as defined by the scope of the appended claim. Y

What I claim is A valve comprising a stem having a circular bore, a.valve seat in the upper end of said bore, a pin extending through saidbore, a poppet valve formed upon the upper end of said pin and adaptedto seat upon said valve seat, a piston formed on the lower end of saidstem and adapted to slide into said bore when said poppet valve is incontact with said seat, and a spring adapted to maintain said poppetvalve against said seat.

In testimony whereof I aix my signature.

HOMER HA'STING.

